<!--
  This file is a part of the open-eBackup project.
  This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
  If a copy of the MPL was not distributed with this file, You can obtain one at
  http://mozilla.org/MPL/2.0/.
  
  Copyright (c) [2024] Huawei Technologies Co.,Ltd.
  
  THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
  EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
  MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
  -->

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en-us" xml:lang="en-us">
 <head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="DC.Type" content="topic">
  <meta name="DC.Title" content="A Backup Job Fails Because the System Writer Is Not Found, with an Error of Error Code 8078001D Displayed in the Error Details">
  <meta name="product" content="">
  <meta name="DC.Relation" scheme="URI" content="en-us_topic_0000002164769606.html">
  <meta name="prodname" content="">
  <meta name="version" content="">
  <meta name="brand" content="">
  <meta name="DC.Publisher" content="20250306">
  <meta name="prodname" content="csbs">
  <meta name="documenttype" content="usermanual">
  <meta name="DC.Format" content="XHTML">
  <meta name="DC.Identifier" content="EN-US_TOPIC_0000002164769666">
  <meta name="DC.Language" content="en-us">
  <link rel="stylesheet" type="text/css" href="public_sys-resources/commonltr.css">
  <title>A Backup Job Fails Because the System Writer Is Not Found, with an Error of Error Code 8078001D Displayed in the Error Details</title>
 </head>
 <body style="clear:both; padding-left:10px; padding-top:5px; padding-right:5px; padding-bottom:5px">
  <a name="EN-US_TOPIC_0000002164769666"></a><a name="EN-US_TOPIC_0000002164769666"></a>
  <h1 class="topictitle1">A Backup Job Fails Because the System Writer Is Not Found, with an Error of Error Code 8078001D Displayed in the Error Details</h1>
  <div>
   <div class="section">
    <h4 class="sectiontitle">Symptom</h4>
    <p>A backup job fails, with the message "Failed to execute the Active Directory backup subjob due to a system error. System error code: 8078001D; error description: The system writer is not found in the backup." displayed.</p>
   </div>
   <div class="section">
    <h4 class="sectiontitle">Possible Causes</h4>
    <p>The backup fails because the system writer cannot be found. The possible cause is that the user permissions on files in the <em>%windir%</em><strong>\winsxs\temp\PendingRenames</strong> or <em>%windir%</em><strong>\winsxs\filemaps</strong> directory on the production host are incorrect.</p>
    <div class="note">
     <img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span>
     <div class="notebody">
      <p><em>%windir%</em> is an environment variable. By default, it refers to <strong>C:\Windows</strong>.</p>
     </div>
    </div>
   </div>
   <div class="section">
    <h4 class="sectiontitle">Procedure</h4>
    <p>For details, see <a href="https://learn.microsoft.com/en-us/troubleshoot/windows-server/backup-and-storage/system-writer-not-found-in-backup" target="_blank" rel="noopener noreferrer">System writer is not found in the backup</a>.</p>
   </div>
   <p></p>
  </div>
  <div>
   <div class="familylinks">
    <div class="parentlink">
     <strong>Parent topic:</strong> <a href="en-us_topic_0000002164769606.html">FAQs</a>
    </div>
   </div>
  </div>
 </body>
</html>